How To Measure Water Flow Like a Pro! Using a Weir Cup/U-Flow Gauge DIY Water Flow Measurement: Easy with a U-Flow Gauge! How to Use a Weir Cup/U-Flow Gauge Simple Water Flow Test Plumbing Hack: Accurate Water Flow Measurement with a U-Flow Cup Learn how to quickly and accurately measure water flow using a weir cup, also known as a U-Flow gauge! This simple tool is essential for plumbing checks and installations. Watch to see how easy it is! #PlumbingTips #DIYPlumbing #waterflow #UFlowGauge #Hom